The content provided in these pages has informed the Office of Juvenile Justice and Delinquency Prevention’s FY 2010 Youth Gang Prevention and Intervention Program. While additional research needs to be done, by adapting the secondary prevention programs described herein and similar evidence-based approaches to address their local gang problems, communities can ensure a better future for their ...

Multi-armed bandit problems formalize the exploration-exploitation trade-offs arising in several industrially relevant applications, such as online advertisement and, more generally, recommendation systems. In many cases, however, these applications have a strong social component, whose integration in the bandit algorithm could lead to a dramatic performance increase. For instance, content may ...

Gang Cheng and co-workers firstly report an active-ion-gated strategy to active room temperature (RT) acetone sensing of metal oxide semiconductors (MOS). The presents high performance low power consumption, which paves the way for boosting RT gas traditional MOS by customizing specific ions with various discharge atmosphere.

For the characteristics of horizontal fractures in shallow low-permeability oil layers after hydraulic fracturing in multilayer reservoirs, horizontal fractures are taken equivalent to an elliptical cylinder with the reservoir thickness using the equivalent permeability model; then, upon the elliptic seepage theory, the seepage field which has led by a vertical well with horizontal fractures is...

Conventional gang scheduling has the disadvantage that when processes perform I/O or blocking communication, their processors remain idle because alternative processes cannot be run independently of their own gangs. To alleviate this problem, we suggest a slight relaxation of this rule: match gangs that make heavy use of the CPU with gangs that make light use of the CPU (presumably due to I/O o...

We define an elliptic equation for Hermitian metrics which is related to the Einstein condition. Solutions to this equation are closely related to Kähler-Einstein metrics, and are automatically Kähler-Einstein when a certain non-positive condition is satisfied by c1(M). Given this, a natural flow equation arises taking Hermitian metrics to Kähler metrics. We prove short time existence and regul...